ASP.NET WebServce项目下添加Http服务，支持Get，Post请求方式;传输格式json/xml

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由于WEBServce老项目中需要增添新的接口，而且添加的接口不希望被其它项目以引用Servces方式使用。

那么得在现有Service项目中添加Http请求方式来实现系统间数据交互。只需要告知请求地址，请求方法(GET,POST)，和数据格式(JSON,XML)即可实现了。

客户端就如同调用普通HTTP接口一样。这样就不用强制引用啦！

要让WebService支持HTTP调用，首先需要在配置文件system.web节点下添加：

<webServices>

服务端代码实现：

首先添加文件 TestService.asmx，添加如下方法：

...... [WebMethod]
public void TestSer()
{
var paramsHt = GetFormPostData<ReqData>(); Record record = new Record(); record.RetValue = new JavaScriptSerializer().Serialize(paramsHt);
List<Record> list = new List<Record>();
list.Add(record); ResponseJSON<Record>(list);
} //将请求数据转换为对象T public static T GetFormPostData<T>()
{
var reqData = HttpContext.Current.Request; var data = default(T);
using (StreamReader reqStream = new StreamReader(HttpContext.Current.Request.InputStream,System.Text.Encoding.UTF8))
{
data = new JavaScriptSerializer().Deserialize<T>(HttpContext.Current.Server.UrlDecode(reqStream.ReadToEnd()));
} return data;
} public static void ResponseJSON<T>(List<T> ret)
{
string json = new JavaScriptSerializer().Serialize(ret); HttpResponse res = HttpContext.Current.Response;
res.ContentType = "text/plain";
res.Charset = "utf-8";
res.ContentEncoding = Encoding.UTF8; res.Write(json); } //构造请求数据 public class ReqData
{
public int ID { get; set; }
public string Name { get; set; }
} ......

WebForm请求端代码：

protected void Button1_Click(object sender, EventArgs e)
{
string strURL = this.txtURL.Text.Trim(); try
{
byte[] postBytes = Encoding.UTF8.GetBytes(Server.UrlDecode(this.txtData.Text.Trim()));
HttpWebRequest myRequest = (HttpWebRequest)WebRequest.Create(strURL);
myRequest.Method = "POST";
myRequest.ContentType = "application/xml";
//myRequest.ContentType = "text/html";
myRequest.ContentLength = postBytes.Length;
myRequest.Proxy = null;
Stream newStream = myRequest.GetRequestStream();
newStream.Write(postBytes, , postBytes.Length);
newStream.Close();
// Get response
HttpWebResponse myResponse = (HttpWebResponse)myRequest.GetResponse();
using (StreamReader reader = new StreamReader(myResponse.GetResponseStream(), Encoding.GetEncoding("utf-8")))
{
string content = reader.ReadToEnd(); this.lblResponseData.Text = content;
}
}
catch (System.Exception ex)
{ this.lblResponseData.Text = ex.Message;
}
}